30520074073 has 2 divisors, whose sum is σ = 30520074074. Its totient is φ = 30520074072.

The previous prime is 30520074071. The next prime is 30520074077. The reversal of 30520074073 is 37047002503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25404534544 + 5115539529 = 159388^2 + 71523^2 .

It is a cyclic number.

It is not a de Polignac number, because 30520074073 - 2¹ = 30520074071 is a prime.

Together with 30520074071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30520074071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15260037036 + 15260037037.

It is an arithmetic number, because the mean of its divisors is an integer number (15260037037).

Almost surely, 2^30520074073 is an apocalyptic number.

It is an amenable number.

30520074073 is a deficient number, since it is larger than the sum of its proper divisors (1).

30520074073 is an equidigital number, since it uses as much as digits as its factorization.

30520074073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 31.

Adding to 30520074073 its reverse (37047002503), we get a palindrome (67567076576).

The spelling of 30520074073 in words is "thirty billion, five hundred twenty million, seventy-four thousand, seventy-three".